Farm Equipment - combine engines

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combine engines

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=17676
Printed Date: 26 Aug 2025 at 7:47am
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Topic: combine engines

Posted By: Charlie175
Subject: combine engines
Date Posted: 03 Sep 2010 at 9:08pm

so what is it about combine engines that make them more powerful than the tractor engines they evolved from?

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Charlie

'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD

Replies:

Posted By: AllisChalmers37
Date Posted: 03 Sep 2010 at 9:48pm

I don't know for sure but if I had to guess I would say they had alot higher compression than the older ones.

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1937 WC, 1950 CA, 1959 D14, 1967 190XT, 2006 Ram 3500

Posted By: Sandknob
Date Posted: 03 Sep 2010 at 10:18pm

Different way the horsepower is rated. Combines are engine horsepower where as tractors are PTO horsepower or drawbar horsepower.

Adam

Posted By: Lester
Date Posted: 04 Sep 2010 at 6:59am

Also combine engines are almost always rated at a higher rpm to get more hp too.

Posted By: FredinInd
Date Posted: 04 Sep 2010 at 7:13am

AC 2900 turbo eng out of combine with 800hrs on major $900. Was that a good buy? I didn't get it. Was at P-M auction. yesterday. I went to $750 and got out.

Posted By: Jordan(OH)
Date Posted: 04 Sep 2010 at 11:07am

That was CHEAP! Salvage yard would want at least $2000 plus your old one.